Home / 7,158,795-9,879,138.72-3,939,531

Finding the Fourth Proportional to 7,158,795, 9,879,138.72 and 3,939,531

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Solution

The fourth proportional to 7,158,795, 9,879,138.72 and 3,939,531 is: 5,436,553.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,158,795 : 9,879,138.72 = 3,939,531 : x
  2. Step 2: Convert to fraction form
    7,158,795/9,879,138.72 = 3,939,531/x
  3. Step 3: Cross multiply
    7,158,795x = 9,879,138.72 × 3,939,531
  4. Step 4: Simplify right side
    7,158,795x = 38,919,173,240,740.32
  5. Step 5: Solve for x
    x = 38,919,173,240,740.32/7,158,795
  6. Step 6: Final answer
    x = 5,436,553.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.